Evaluation of nausea and vomiting: a case-based approach

Area of Science:

• Gastroenterology
• Internal Medicine
• Diagnostic Medicine

Background:

• Acute nausea and vomiting (N&V) is a common symptom with diverse etiologies.
• It can be a self-limited issue or a sign of serious underlying conditions.
• N&V is also a frequent side effect of medical treatments like chemotherapy and radiation therapy.

Purpose of the Study:

• To outline the differential diagnosis of acute and chronic nausea and vomiting.
• To describe the diagnostic approach, including history, physical examination, laboratory tests, and imaging.
• To highlight key considerations for evaluating persistent or severe cases.

Main Methods:

• Clinical history and physical examination are primary diagnostic tools.
• Laboratory tests may include urinalysis, pregnancy testing, complete blood count, metabolic panel, and specific enzyme levels.
• Imaging studies such as abdominal radiography, ultrasonography, and CT scans are utilized based on clinical suspicion.

Main Results:

• Most acute nausea and vomiting cases, without alarm signs, are self-limited.
• Alarm signs like dehydration or acute abdomen necessitate further investigation.
• Chronic nausea and vomiting (lasting >1 month) requires evaluation for malignancy, gastroparesis, or psychiatric causes.

Conclusions:

• A thorough history and physical exam are crucial for diagnosing nausea and vomiting.
• Targeted laboratory and imaging studies aid in identifying the underlying cause.
• Management strategies should address the specific etiology, ranging from supportive care to endoscopic or functional studies.